ELECTROMAGNET AND CHARGED PARTICLE ACCELERATOR

WIPO Patent Application WO/2022/239398

A1

The present invention ensures a sufficient separation distance between the orbit of a separated charged particle beam and the orbit of a charged particle beam traveling through a main region while preventing interference between the orbit of the separated charged particle beam and an electromagnet.　A quadrupolar electromagnet (14) is formed from: an iron core (20) provided with a beam-passing gap (26) for an emitted beam (2B), that is, a separated charged particle beam, to travel therethrough in addition to a main region (23) for an orbiting beam (2A), that is, a charged particle beam, to travel therethrough; excitation coils (21A, 21B, 21C, 21D) wound on the iron core; a main vacuum duct (12) disposed in the main region (23) of the iron core and allowing the orbiting beam (2A) to travel through the inside thereof; and a sub-vacuum duct (17) disposed on the beam-passing gap (26) of the iron core and allowing the emitted beam (2B) to travel through the inside thereof.

YOKOTA RYUKI (JP)
TAJIMA YUJIRO (JP)

PCT/JP2022/008972

November 17, 2022

March 02, 2022

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TOSHIBA KK (JP)
TOSHIBA ENERGY SYSTEMS & SOLUTIONS CORP (JP)

H05H7/04; H05H13/04

JPH11339998A

1999-12-10

SAEIDI F., RAZAZIAN M., RAHIGHI J., POURIMANI R.: "Magnet design for an ultralow emittance storage ring", PHYSICAL REVIEW ACCELERATORS AND BEAMS, vol. 19, no. 3, 1 March 2016 (2016-03-01), XP093003493, DOI: 10.1103/PhysRevAccelBeams.19.032401
OHNISHI Y, OHO KEK: "UPGRADE PLAN OF KEKB", 14 April 2008 (2008-04-14), pages 23 - 27, XP093003494, Retrieved from the Internet [retrieved on 20221130]

TOKYO INTERNATIONAL PATENT FIRM (JP)

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